Preparing Hardness Prediction Data Using Carburized Jominy Bar for Carburizing Quenching

Abstract

Present paper shows a simple approach for obtaining hardness data by predicting the hardness values in carburizedquenched steel parts using quench simulations. Conventionally, the relationship between cooling rate and hardness values is evaluated by preparing test pieces of varying carbon concentrations and performing quench tests. In this method, Jominy end quench test method is used with only one test piece to obtain carburized-quenching hardness data that reflects the effect of carbon concentration. Finally, a comparison is made between simulated results and measured values of the effective case depth after carburizing-quenching of a cylindrical steel specimen. A good agreement was observed between experimental and simulated results.